From: "Qiu, Michael" <michael.qiu@intel.com>
To: "Van Haaren, Harry" <harry.van.haaren@intel.com>,
"david.marchand@6wind.com" <david.marchand@6wind.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] eal: add function to check if primary proc alive
Date: Thu, 21 Jan 2016 06:14:00 +0000 [thread overview]
Message-ID: <533710CFB86FA344BFBF2D6802E6028622F1E7EA@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <1453296322-1210-1-git-send-email-harry.van.haaren@intel.com>
On 1/20/2016 9:26 PM, Harry van Haaren wrote:
> This patch adds a new function to the EAL API:
> int rte_eal_primary_proc_alive(const char *path);
>
> The function indicates if a primary process is alive right now.
> This functionality is implemented by testing for a write-
> lock on the config file, and the function tests for a lock.
>
> The use case for this functionality is that a secondary
> process can wait until a primary process starts by polling
> the function and waiting. When the primary is running, the
> secondary continues to poll to detect if the primary process
> has quit unexpectedly, the secondary process can detect this.
>
> The RTE_MAGIC number is written to the shared config by the
> primary process, this is the signal to the secondary process
> that the EAL is set up, and ready to be used. The function
> rte_eal_mcfg_complete() writes RTE_MAGIC. This has been
> delayed in the EAL init proceedure, as the PCI probing in
> the primary process can interfere with the secondary running.
>
> Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
> ---
one question:
As we could start up many primaries, how does your secondary process
work with them?
Thanks,
Michael
next prev parent reply other threads:[~2016-01-21 6:15 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-20 13:25 Harry van Haaren
2016-01-21 6:14 ` Qiu, Michael [this message]
2016-01-21 6:19 ` Matthew Hall
2016-01-21 9:02 ` Van Haaren, Harry
2016-01-22 17:37 ` Bruce Richardson
2016-01-25 8:06 ` Qiu, Michael
2016-01-25 11:44 ` Van Haaren, Harry
2016-01-26 19:13 ` Bruce Richardson
2016-01-27 10:35 ` Van Haaren, Harry
2016-01-25 8:11 ` Qiu, Michael
2016-01-25 11:51 ` Van Haaren, Harry
2016-01-26 2:25 ` Qiu, Michael
2016-01-26 9:04 ` Van Haaren, Harry
2016-01-26 11:07 ` Qiu, Michael
2016-01-26 11:19 ` Van Haaren, Harry
2016-01-27 10:31 ` [dpdk-dev] [PATCH v2] " Harry van Haaren
2016-02-02 14:11 ` [dpdk-dev] [PATCH v3] " Harry van Haaren
2016-02-23 14:10 ` [dpdk-dev] [PATCH v4] " Harry van Haaren
2016-02-24 13:50 ` Tahhan, Maryam
2016-03-04 18:07 ` Thomas Monjalon
2016-03-07 11:37 ` [dpdk-dev] [PATCH v5] " Harry van Haaren
2016-03-07 12:02 ` [dpdk-dev] [PATCH v6] " Harry van Haaren
2016-03-08 8:42 ` David Marchand
2016-03-08 9:58 ` Van Haaren, Harry
2016-03-08 11:13 ` Thomas Monjalon
2016-03-08 11:19 ` David Marchand
2016-03-08 13:57 ` Van Haaren, Harry
2016-03-08 14:40 ` David Marchand
2016-03-08 17:07 ` [dpdk-dev] [PATCH v7 0/2] eal: add function to check primary alive Harry van Haaren
2016-03-08 17:07 ` [dpdk-dev] [PATCH v7 1/2] eal: fix race-condition in pri/sec proc startup Harry van Haaren
2016-03-08 17:07 ` [dpdk-dev] [PATCH v7 2/2] eal: add function to check if primary proc alive Harry van Haaren
2016-03-09 10:12 ` [dpdk-dev] [PATCH v8 0/2] eal: add function to check primary alive Harry van Haaren
2016-03-09 10:12 ` [dpdk-dev] [PATCH v8 1/2] eal: fix race-condition in pri/sec proc startup Harry van Haaren
2016-03-09 13:23 ` Sergio Gonzalez Monroy
2016-03-09 10:12 ` [dpdk-dev] [PATCH v8 2/2] eal: add function to check if primary proc alive Harry van Haaren
2016-03-09 11:07 ` [dpdk-dev] [PATCH v8 0/2] eal: add function to check primary alive David Marchand
2016-03-09 12:59 ` Sergio Gonzalez Monroy
2016-03-09 13:37 ` [dpdk-dev] [PATCH v9 " Harry van Haaren
2016-03-09 13:37 ` [dpdk-dev] [PATCH v9 1/2] eal: fix race-condition in pri/sec proc startup Harry van Haaren
2016-03-09 14:27 ` Sergio Gonzalez Monroy
2016-03-09 13:37 ` [dpdk-dev] [PATCH v9 2/2] eal: add function to check if primary proc alive Harry van Haaren
2016-03-09 15:02 ` Thomas Monjalon
2016-03-09 15:17 ` [dpdk-dev] [PATCH v9 0/2] eal: add function to check primary alive Thomas Monjalon
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